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Original Article
Neonatology (Perinatology)
Effect of high-frequency oscillatory ventilation with intermittent sigh breaths on carbon dioxide levels in neonates
Kulthida Baingam, Anucha Thatrimontrichai, Manapat Praditaukrit, Gunlawadee Maneenil, Supaporn Dissaneevate
Clin Exp Pediatr. 2025;68(2):178-184.   Published online November 13, 2024
Question: Can sigh breaths (Sighs) application during high-frequency oscillatory ventilation (HFOV) decrease partial pressure of carbon dioxide (PaCO2) levels?
Finding: The mean PaCO2 level after Sighs during HFOV was significantly decreased compared to that after HFOV alone (mean difference, -3.6 mmHg).
Meaning: HFOV plus Sighs functionality can reduce PaCO2 levels. However, further studies are required to conclusively determine the effects of Sighs.
Short-term outcomes of oropharyngeal administration of colostrum in preterm neonates: a double-blind placebocontrolled randomized trial
Ameneh Lamsehchi, Maryam Shokouhi Solgi, Mohammad Kazem Sabzehei, Behnaz Basiri, Elahe Talebi Ghane, Kiana Kimiaei Asadi, Sina Azadnajafabad
Clin Exp Pediatr. 2025;68(1):73-79.   Published online October 31, 2024
Question: What are the short-term outcomes of oropharyngeal administration of colostrum (OAC) in preterm neonates?
Finding: This study demonstrated the significantly lower rates of necrotizing enterocolitis, clinically suspected sepsis, shorter hospital stay, period to full enteral feeding, and antibiotic therapy period in the OAC group.
Meaning: This trial may further expand the clinical application of OAC in premature infants to reduce their length of hospital stay and complications.
Review Article
Neonatology (Perinatology)
Need for national guidance regarding proactive care of infants born at 22–23 weeks' gestation
Ga Won Jeon
Clin Exp Pediatr. 2025;68(1):53-61.   Published online November 13, 2024
With advancements in neonatal intensive care, the limit of viability has shifted to 22–23 weeks' gestation, whose survival rates vary across countries and institutions. These rates are not static and can be improved through the proactive and centralized care guided by national protocols, including maternal transfer to high-activity regions with better neonatal intensive care practices before delivery.
Strategies to support language development in neonatal intensive care unit: a narrative review
Ju Sun Heo, Ee-Kyung Kim
Clin Exp Pediatr. 2024;67(12):651-663.   Published online November 6, 2024
· Preterm infants often experience speech and language development delays during early childhood, impacting children's ultimate outcomes.
· Promoting breastfeeding, increasing parent-infant interactions in a single-family room, promoting a nurturing language environment by parental book reading and language interventions, and parent-integrated interventions in the neonatal intensive care unit could potentially enhance children's language development.
· Integrating these strategies through family-centered care is essential.
Original Article
Neonatology (Perinatology)
Mortality of very low birth weight infants by neonatal intensive care unit workload and regional group status
Sung-Hoon Chung, Chae Young Kim, Yong-Sung Choi, Myung Hee Lee, Jae Woo Lim, Byong Sop Lee, Ki-Soo Kim; the Korean Neonatal Network
Clin Exp Pediatr. 2024;67(11):619-627.   Published online September 12, 2024
Question: How do structural and staffing characteristics of neonatal intensive care units (NICUs) influence the mortality rates of very low birth weight infants (VLBWIs)?
Findings: NICUs with higher staffing levels, particularly with more neonatologists, and those offering advanced care levels were associated with lower mortality rates. Additionally, regional disparities were observed, with some areas demon-strating significantly higher survival rates.
Meaning: Adequate staffing and equitable regional distribution of medical resources are crucial for improving survival outcomes in VLBWIs. Efforts to enhance NICU staffing and address regional healthcare disparities are essential for optimizing care quality and reducing mortality in this vulnerable population.
Protective effect of recombinant interleukin-10 on newborn rat lungs exposed to short-term sublethal hyperoxia
Hyeon-Soo Lee, Young-Joon Ryu, Min-Jae Lee
Clin Exp Pediatr. 2024;67(10):540-549.   Published online September 27, 2024
Lung injury is generated from the early stage of hyperoxia through the biologic effects of cell death and inflammatory response, which eventually leads to evolution of bronchopul-monary dysplasia. Therefore, a protective measure against hyperoxia-induced lung injury is needed. The present study observed that anti-inflammatory cytokine, interleukin-10 had protective effects on newborn rat lungs from injury induced at the early stage of hyperoxia, by preventing cell death and down-regulating inflammatory response.
Review Article
Neonatology (Perinatology)
Demographic transition in South Korea: implications of falling birth rates
Chae Young Kim, Sung-Hoon Chung
Clin Exp Pediatr. 2024;67(10):498-509.   Published online June 27, 2024
· Since 1960, South Korea's TFR decreased from 6.33 to 0.78 in 2022, below the 2.1 replacement level since 1983, with women's average age at first marriage rising to 31.3 in 2022.
· Policies needed: financial incentives, longer parental leave, better childcare.
· The U.S. (15.3% immigrants) and Germany (18.8%) use immigration to maintain demographic stability, a strategy South Korea is considering.
Quantifying myelin in neonates using magnetic resonance imaging: a systematic literature review
Nabila Hanem Arshad, Hasyma Abu Hassan, Nur Farhayu Omar, Zurina Zainudin
Clin Exp Pediatr. 2024;67(8):371-385.   Published online December 6, 2023
Question: This systematic review attempts to discover the best magnetic resonance imaging (MRI) technique for myelin quantification in neonates by evaluating various MRI parameters and their reproducibility.
Finding: Since the benefits of using synthetic MRI for quantifying myelin in neonates outweigh the very minor draw- backs, it is recommended.
Meaning: The findings suggest the importance of identifying noninvasive MRI techniques available to assess myelin tissue in neonates, which aid in diagnosing neurodevelopmental disorders.
Letter to the Editor
Neonatology (Perinatology)
Pentraxin 3 as a marker of early-onset neonatal sepsis
Safaa ELMeneza, Iman El-Bagoury, Hind Rayes, Amira Hassan
Clin Exp Pediatr. 2024;67(6):312-314.   Published online May 23, 2024
Original Article
Neonatology (Perinatology)
Effect of vitamin E supplementation on bilirubin levels in infants with hyperbilirubinemia: a double-blind randomized clinical trial
Mojtaba Cheraghi, Maziar Nikouei, Majid Mansouri, Siros Hemmatpour, Yousef Moradi
Clin Exp Pediatr. 2024;67(5):249-256.   Published online March 26, 2024
Question: Is vitamin E a viable therapeutic option for managing neonatal hyperbilirubinemia?
Finding: This randomized clinical trial examined the effects of oral vitamin E supplementation on bilirubin reduction (primary outcome), phototherapy duration, and length of hospital stay (secondary outcome) in 138 infants.
Meaning: Infants administered vitamin E versus placebo demonstrated similar reductions in bilirubin levels and length of hospital stay.
Editorial
Neonatology (Perinatology)
Exploring the role of laryngeal masks in neonatal resuscitation
Euiseok Jung
Clin Exp Pediatr. 2024;67(5):247-248.   Published online December 28, 2023
· Laryngeal masks (LMs) offer stable airway access and skill retention advantages, making them promising alternatives to positive-pressure ventilation in neonatal care.
· The ease of teaching LM insertion techniques to less experienced providers addresses the need for swift intervention and skill retention.
· Careful consideration of the benefits and challenges of LMs is essential in determining their effective integration into enhanced neonatal resuscitation protocols.
Review Article
Neonatology (Perinatology)
Updates in neonatal resuscitation: routine use of laryngeal masks as an alternative to face masks
Eun Song Song, Ga Won Jeon
Clin Exp Pediatr. 2024;67(5):240-246.   Published online July 11, 2023
In neonatal resuscitation:
· Laryngeal masks are recommended when endotracheal intubation or positive-pressure ventilation fails.
· Laryngeal masks are useful even during chest compressions.
· Laryngeal masks aid neonates >34 weeks’ gestation and/or with a birth weight >2 kg.
· Main usage barriers include limited experience (81%), preference for endotracheal tubes (57%), and lack of awareness (56%).
· Second-generation laryngeal masks have a built-in esophageal drainage tube that prevents regurgitation into the glottis, and an orogastric tube can be inserted within the esophageal drainage tube to protect against gastric inflation.
Influence of infant microbiome on health and development
Noelle Younge
Clin Exp Pediatr. 2024;67(5):224-231.   Published online August 21, 2023
· The infant gut microbiome is highly dynamic and individualized.
· Microbes are vertically transmitted from mother to infant during delivery and throughout infancy.
· Delivery mode, gestational age, diet, and antibiotic use influence infant microbiome composition and function.
· In animal studies, the microbiome played critical roles in the structural and functional development of the infant gastrointestinal and immune systems.
· Microbiome-targeted therapies have great potential to reduce infant morbidity and mortality.
Letter to the Editor
Neonatology (Perinatology)
Assessment of iron status and red cell parameters in healthy term small for gestational age neonates at birth
Arif Hossain, Shorna Rahman, Shahana Akter, Ismat Jahan, Sanjoy Kumer Dey, Abdul Mannan, Mohammod Shahidullah
Clin Exp Pediatr. 2024;67(4):221-223.   Published online March 19, 2024
Review Article
Neonatology (Perinatology)
Neonatal family-centered care: evidence and practice models
Juyoung Lee
Clin Exp Pediatr. 2024;67(4):171-177.   Published online June 14, 2023
· Concrete evidence exists of early parent-infant attachment supported by family-centered care (FCC) in the neonatal intensive care unit.
· FCC involves the parents’ presence and participation in the infant’s care and decision-making.
· A private and comfortable space should be provided. A single-family room is ideal; however, a quiet space with a recliner can be a good alternative.
· Care culture changes and staff training are required.
Original Article
Neonatology (Perinatology)
Oral administration of bone marrow-derived mesenchymal stem cells attenuates intestinal injury in necrotizing enterocolitis
Yeong Seok Lee, Yong Hoon Jun, Juyoung Lee
Clin Exp Pediatr. 2024;67(3):152-160.   Published online February 19, 2024
Question: What is the optimal dose of bone marrow-derived mesenchymal stem cells (BM-MSCs) for treating necrotizing enterocolitis (NEC), and is orally administered BM-MSC effective?
Findings: High (1×106 cells) or multiple BM-MSC doses showed similar effects as low (1×105 cells) doses of intraperitoneally administered BM-MSCs. Furthermore, orally administered BM-MSCs were as effective as intraperitoneally administered BM-MSCs.
Meaning: Orally administered low-dose BM-MSCs are a potential treatment for NEC.
Editorial
Neonatology (Perinatology)
Impacts of maternal COVID-19 during pregnancy on neonatal health and epidemiology
Jae Woo Lim
Clin Exp Pediatr. 2024;67(3):149-151.   Published online December 28, 2023
Newborns born to mothers infected with coronavirus disease 2019 (COVID-19) should be closely monitored for respiratory disorders, such as transient tachypnea of the newborn, regardless of their COVID-19 test results. Further research is required of the development of infants born to mothers with COVID-19. The trends in Korea's birth rate and infant mortality rates have not been significantly affected by COVID-19.
Original Article
Neonatology (Perinatology)
Prevalence of anxiety, depression, and stress among parents of neonates admitted to neonatal intensive care unit: a systematic review and meta-analysis
Asha P. Shetty, Kurvatteppa Halemani, Alwin Issac, Latha Thimmappa, Sanjay Dhiraaj, Radha K, Prabhaker Mishra, Vijai Datta Upadhyaya
Clin Exp Pediatr. 2024;67(2):104-115.   Published online November 14, 2023
Question: What emotions do parents experience when their newborns are admitted to the neonatal intensive care unit (NICU)?
Finding: Mothers experienced more anxiety (51%), depression (31%), and stress (41%) symptoms than fathers (26%, 12%, and 22%, respectively).
Meaning: Parents often experience anxiety, stress, and depression following NICU admission. Healthcare workers are responsible for providing regular parental counseling.
Letter to the Editor
Neonatology (Perinatology)
Association between feeding intolerance and intestinal dysbiosis in very premature infants
Putri Maharani Tristanita Marsubrin, Agus Firmansyah, Rinawati Rohsiswatmo, Zakiudin Munasir, Saptawati Bardosono, Safarina G. Malik, Yuditiya Purwosunu, Ina S. Timan, Tetty Yuniati, Maya Yulindhini
Clin Exp Pediatr. 2023;66(11):501-503.   Published online October 24, 2023
Original Article
Neonatology (Perinatology)
Association between maternal coronavirus disease 2019 and transient tachypnea of the newborn: a single-center study
Sung Hee Lee, Ju Hyun Jin, Jong Ha Yoo, Shin Won Yoon
Clin Exp Pediatr. 2023;66(11):493-500.   Published online October 24, 2023
Question: What are the adverse clinical outcomes of neonates of coronavirus disease 2019 (COVID-19)–infected mothers?
Finding: Infants of mothers with COVID-19 were at significantly increased risk of transient tachypnea of the newborn (TTN), use of noninvasive ventilation, and need for supplemental oxygen (P<0.05).
Meaning: Neonates of mothers with COVID-19 are at risk of TTN and require respiratory support. Close monitoring is essential to ensuring timely intervention if required.
Review Article
Neonatology (Perinatology)
Treatment of congenital cytomegalovirus infection
Gyu Hong Shim
Clin Exp Pediatr. 2023;66(9):384-394.   Published online December 28, 2022
· Congenital cytomegalovirus (CMV) infection is among the most common causes of nongenetic sensorineural hearing loss.
· Congenital CMV is initially treated with intravenous ganciclovir for 2–6 weeks and switched to oral valganciclovir, or with oral valganciclovir for the entire 6-month period.
· Infants with congenital CMV require periodic monitoring of absolute neutrophil count, platelet count, and blood urea nitrogen, creatinine, liver function tests, audiological, ophthalmological, and developmental tests during antiviral medication.
Neurodevelopmental outcomes of preterm infants
In Gyu Song
Clin Exp Pediatr. 2023;66(7):281-287.   Published online December 30, 2022
· Among survivors, 60.9% of infants born at 22 weeks’ gestation had moderate to severe impairments, whereas 50.3% born at 23 weeks’ and 42.2% at 24 weeks’ gestation had moderate to severe impairments.
· Moderate and late preterm infants reportedly have less severe disease than very preterm infants, but they still experience adverse neurodevelopmental outcomes.
· The careful follow-up and early detection of developmental problems in these patients are required.
Original Article
Neonatology (Perinatology)
Efficacy of body position on gastric residual in preterm infant: a systematic review and meta-analysis
Kurvatteppa Halemani, Alwin Issac, Sanjay Dhiraaj, Prabhaker Mishra
Clin Exp Pediatr. 2023;66(6):262-270.   Published online November 30, 2022
Breastfeeding and it's tolerance are the positive indicators for preterm babies. Placing the preterm infant in the right lateral or prone position after feed had lesser gastric residual volume compared to placing them in left lateral or supine positions. The post-feed position is a vital element in enhancing feeding tolerance, mechanical functions of the gastrointestinal tract and the overall development of preterm infants.
A thickened formula reduces feeding-associated oxygen desaturation and bradycardia in preterm infants
Gayoung Lee, Juyoung Lee, Ga Won Jeon, Yong Hoon Jun
Clin Exp Pediatr. 2023;66(1):32-37.   Published online December 15, 2022
Question: Is a commercial thickened formula able to alleviate oral feeding-associated desaturation and bradycardia in preterm infants?
Finding: Thickened formula feeding significantly reduced oral feeding-associated desaturation and bradycardia in preterm infants.
Meaning: Thickened formula feeding stabilizes oxygen saturation and heart rate during oral feeding among preterm infants with feeding difficulties.
Editorial
Neonatology (Perinatology)
Does cord blood cortisol have a mediating effect on maternal prepregnancy body mass index and birth weight?
Gyu Hong Shim
Clin Exp Pediatr. 2023;66(1):24-25.   Published online November 30, 2022
· A high prepregnancy body mass index (pre-BMI) is associated with large for gestational age (LGA) and macrosomia, whereas a low pre-BMI is associated with small for gestational age (SGA) and low birth weight (LBW).
· The identification of the role of the hypothalamus-pituitary-adrenal axis in the effect of pre-BMI and maternal gestational weight gain on birth weight could reduce the frequency of LGA, macrosomia, SGA, or LBW through maternal diet optimization.
Review Article
Neonatology (Perinatology)
Neonatal seizures: stepping outside the comfort zone
Menna Hashish, Mohamed Reda Bassiouny
Clin Exp Pediatr. 2022;65(11):521-528.   Published online April 4, 2022
· Use conventional and amplitude-integrated electroencephalography to confirm clinical seizures and screen high-risk newborns.
· Select an explicit clear elective event to be treated with less toxic and more effective antiepileptics.
Original Article
Neonatology (Perinatology)
Mediation effect of cord blood cortisol levels between maternal prepregnancy body mass index and birth weight: a hospital-based cross-sectional study
Nisanth Selvam, Jayashree K, Prasanna Mithra
Clin Exp Pediatr. 2022;65(10):500-506.   Published online July 29, 2022
Question: What is the association between cord blood cortisol and maternal weight, birth weight, and cord blood lipid profile?
Finding: Cord blood cortisol levels did not influence the relationship between maternal weight changes or birth weight. Maternal weight changes, birth weight, and cortisol levels altered the cord blood lipid profile.
Meaning: Our findings may aid United Nations Sustainable Development Goal 3 (Good Health and Well-Being) achievement by 2030.
Review Article
Neonatology (Perinatology)
Breastfeeding and vitamin D
Ju Sun Heo, Young Min Ahn, Ai-Rhan Ellen Kim, Son Moon Shin; for the Korean Society of Breastfeeding Medicine
Clin Exp Pediatr. 2022;65(9):418-429.   Published online December 14, 2021
∙ Exclusively breastfed infants are at risk of developing vitamin D deficiency associated with hypocalcemia, rickets, and various health outcomes.
∙ The prevalence of vitamin D deficiency in breastfed infants differs vastly between studies and nations at 0.6%–91.1%.
∙ The vitamin D content of breast milk does not meet the requirements of exclusively breastfed infants.
∙ Most international guidelines recommend that breastfed infants be supplemented with 400 IU/day of vitamin D during the first year of life.
∙ Vitamin D intake (milk+supplements) of 800 IU/day can be considered in preterm infants along with biochemical monitoring.
Editorial
Neonatology (Perinatology)
Factors to consider before implementing telemedicine protocols to manage neonatal jaundice
Heui Seung Jo
Clin Exp Pediatr. 2022;65(8):403-404.   Published online April 12, 2022
In the rapidly changing environmental situation during the coronavirus disease 2019 outbreak, neonatal centers have developed telemedicine systems with extended coverage for neonatal monitoring and high-risk follow-up programs including neonatal hyperbilirubinemia. At this point, electronic health technology and noncontact medical system increase the effectiveness of rather than replacing the face-to-face visit and the opinions of experienced neonatologists.
Original Article
Neonatology (Perinatology)
Neonatal sepsis-causing bacterial pathogens and outcome of trends of their antimicrobial susceptibility a 20-year period at a neonatal intensive care unit
Woo Sun Song, Hye Won Park, Moon Youn Oh, Jae Young Jo, Chae Young Kim, Jung Ju Lee, Euiseok Jung, Byong Sop Lee, Ki-Soo Kim, Ellen Ai-Rhan Kim
Clin Exp Pediatr. 2022;65(7):350-357.   Published online December 9, 2021
Question: What is prevalence of bacterial pathogens causing sepsis and their antimicrobial susceptibility over 20 years?
Finding: Coagulase-negative remains most common causative organism. The most common gram-negative organism was Klebsiella pneumonia. The susceptibility of staphylococcus aureus and K. pneumonia showed increased susceptability to oxacillin, cefotaxime and amikacin, gentamicin, respectively.
Meaning: Answers to the question asked is important in choosing antimicrobials and to monitor emergence of multidrug-resistant organisms.
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